10-06-2012, 01:17 PM
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10mm MW
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Join Date: Sep 2008
Location: Michigan
Posts: 794
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Quote:
Originally Posted by oso
thanks om616- how hard is it to replace the wire harness as I see it as a culprit given the effect that jiggling of the wires leads to normalization of the idle rate?
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Well....... And this may sound rude so I apologize in advance.... by asking that question you really should have someone who knows what they are doing trouble shoot the harness to identify the fault. It could be as simple as the metal sleeves in the connector have opened up and doesn’t "grab" the male connector all the time, I am fighting with an oil pressure sensor connector that does just that.
Also, lets take a moment and think about what is going on in an effort to connect engine behavior to events.
If the engine idle starts searching or hunting in a consistent sicklickel pattern, and when IP is unplugged the idle stabilizes, then I look less towards the electrical system and more at the IP. Now it is possible to have a connection that makes when the engine rocks to the right, and brakes when it rocks to the left, creating the repetitive RPM cycles, but, not likely.
If the engine Idle is erratic, every now and then, I would lean toward electrical.
It is possible that you have two separate issues, one mechanical (possibly the DVs) and one electrical (possibly a loose connector or broken wire).
I do agree with you in eliminating the electrical issue first. You will need a wiring diagram, a VOM, and a lot of patience.
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